private void btnChange_Click(object sender, EventArgs e) { if (UserListBox.SelectedIndex == -1) { MessageBox.Show("请选择一个用户"); return; } if (string.IsNullOrEmpty(textBoxNewPassWord.Text) == true || string.IsNullOrEmpty(textBoxAgainPassWord.Text) == true || string.IsNullOrEmpty(textBoxUserName.Text) == true) { MessageBox.Show("用户名或密码不能为空"); return; } if (string.Equals(textBoxAgainPassWord.Text, textBoxNewPassWord.Text) == false) { MessageBox.Show("两次输入新密码不一致"); return; } if (LoginInfo.ChangeUserNamePassword(textBoxUserName.Text, textBoxAgainPassWord.Text) == true && LoginInfo.ChangePassword(textBoxNewPassWord.Text) == true) { MessageBox.Show("修改成功!"); textBoxOldPassWord.Text = textBoxAgainPassWord.Text; } }